| 摘要 |
PURPOSE:To enhance the water resistance of an image formed by using a water- soluble dye without lowering the light fastness thereof by containing a cationic resin and a hardly soluble magnesium compound in recording paper. CONSTITUTION:Ink jet recording paper, which is mainly formed of pulp fibers by a papermaking process and obtains a recording image by using aqueous ink containing a water-soluble dye, contains a cationic resin and a hardly soluble magnesium compound. The cationic resin is a monomer, oligomer or polymer showing a cationic property upon dissipation in a state dissolved in water. The hardly soluble magnesium compound is one, of which the water solubility is usually 1% or less, pref., 0.2% or less, especially pref., 0.05% or less, such as magnesium oxide or magnesium calcium carbonate. The above mentioned recording paper containing both of the cationic resin and the magnesium compound has good light fastness and water resistance and, especially, marked effect to magenta hardly obtaining light fastness. |
